Road scraper



May 7, 1929 E. J. JAcKoBolcE 1,711,789

ROAD SCRAPER Filed Sept. '7. 1926 4 Sheets-Sheet l @dans l/lf.

May 7, 1929. E. .1. JAcKoBovlcE ROAD 'scRA'PER Filed Sept. '7. 1926 4 Sheets-Sheet 2 El/verz Tor Edward fJacobaca 6)/ @MJ VV' May 7, 1929.

E. J. JAcKoBlorcE ROAD SCRAPER Filed Sept. 7,. 1926 4 Sheets-Shet 4 I ZM .Zr-Ven Tor.'

Edward J Ljlcjfo bajo@ 'Parenteel May 7, -1929.

. ,uNiTED STATES Enwmn J. Jacxonorcn, or emp nenne, MICHIGAN.

a nonnscnnrna-- Application led September 7, 1926. Serial No. 133,785.

The present invention relates to road scrapers; and -its object is to provide a road scraper having a scraper blade and improved means for changing the angle thereof relatively to thelirecton of the machines travel over thc roa This and any other and more specific ob jects hereinafter appearing are attained by, and the invention finds. preferable embodiment in,the structure hereinafter particularly described in the body of this specification and illustrated by the accompanying drawings, in which I tially sectioned on line 7-7 of Figure 6;

Flgure 8 is a top plan view of cert-ain parts' Figure 1 vis a top plan View of a portion of a' wheeled vehicle having a road scraper.

mounted thereon, certain parts being sectioned horizontally on line 1--1 of Figures 2 and 3;

Figure 2 is a left-hand side view thereof, a shaft being sectioned vertically on line 2-2 of Figure 1;

Figure 3 1s a of the machine;

Figure 4 is a vertical sectional view of certain parts taken on line 4--4 of Figure 2;

Figure 5 isa top plan view of certain parts front view of certain parts mounted at the left-hand side of Isaid vehicle,

and illustrating a modified construction;

Figure 6 is a face view thereof,` showing the parts in another position and sectioned on line 6-6 of Figure 7; Figure 7 is a front view of said parts, parchine is turnedto, and held in, a desired an-y gle relatively to the direction of the machines travel over the road.

ln the accompanying drawings, the road scraper mechanism is mounted on a vehiclea motor `truck or-the like-having the frame 1 and rear or traction Wheels 2. The bearing.

blocks or swingable arms3 (shown in Figures l1, 2, 4, 5, Band 7) are'pivotally mounted at 18 i on'vertical axes on the opposite sides' respectively of the frame. These bearing blocks or swlngable arms 3have axially vertical bearings 4in which the spindles 5 of the bearinvl members 6 may turn, and may also be move A verticall to fixed positions-in which they may be c amped as by the screw bolts 7. yThese bearing members 6 have horizontally disposed bearmgs 8 in which turns a horizontally disposed shaft 9 carrying the scraper blade 10. This scraper blade is thus carried by lmeans of collars 11 turnably adjustable to fixed positions on the shaft by clamping screws' 12 the scraper blade being supported on the -collars by means of its upright posts 13 turnably mounted on thecollars at 14.

The scraper blade is yieldinglyheld relatively to the collarsb by springs 15, 16 coiled laround rods 17 carrled by the collars and passing freely through openings in the scraper blade, 4

said springs pressing against the opposite sides respctively of the scraperblade, theirI tension threaded on-said rods.` the scraper blade is thus held yieldingly balanced by the springs 15 and 16 andmay thus yield .forward y or rearwardl in-its contact with the surface of the road eing operated on.

ing adjustable by the nuts 19 angle about the axis ofthe shaft 9 by rocking the shaft in its bearings 8 by suitable means,

. as by turning the upright shaft 21 (provided with a suitable hand wheel not shown), jour nalled at 22 on the vehicles frame and having aworm 23 meshing with a toothed seg- 'ment 24 pivoted at 25 on the frame and pivoted eccentricall at 26 to a connecting rod 27 whose rear en is loosely pivoted at 28 onan arm 29 of a sleeve 30 on theshaft 9, saidI sleeve bein adjustable by its clamping screw bolt 31 in Xed ositi'ons on the shaft'. The

connecting rod 2 may be sufficiently spring-- able to permit the swingingof the scraper blade to the desired angular positionl relatively to the frame of the vehicle.

In order that the horizontal angle betweenl the scra erblade and the 'direction of the travel o the vehicle over the road may be It will be seen that- The scraper blade may be tilted to' a desired blocks 3 may be swung on their pivotal mountings 18 to positions indicated in Figures 1 and 5, so that the scraperfblade may .extend at right angl to said direction of travel or be inclined either way from said direction, the shaft 9 making such adjustments sliding changed as desired, one-or both of the bearing in its bearings 8; and thesebearing blocks 8 may be secured in certain positions by the screw bolt 5() threaded at 51 in the frame, or as seen in Figures 5, 6 and 7- by a detent or pin 52 thrust through the hole 53 in said block and any of the holes 54 in the sector 55 secured at the side of the frame.

In themodilied construction shown inFigures 8 and 9, the bearing blocks 31 instead of being swingably mounted are slidable in the -vehicles lon' 'tudinal direction in bearings 'blade relatively to the longitudinal direction of the frame 1. This purpose may manifestly be accomplished in various. ways, one such way being shown in my said patent. Another wa. shown. in Figure 2 of the present applications drawings, is the provision of spaced openings 66 in said rod, into any one of which the pivot pin 26 ma, be inserted. A brace rod 67 serves to secure y hold the pivot post 25 against lat-eral movement at its outer end.

. From the foregoing description, the operations of my road scraper will be readily understood, viz The scraper blade may be bodily raised or lowered-by means of the spindles 5 vertically adjustable in the bearings 4; the

'scraper blade may be inclined at a desired angle to the direction of the vehicles travel by swinging one or both of the bearing blocks 3, or by sliding the bearing blocks 31 by the screw mechanism turned b 'the shaft 63 ;4 the scraper blade may be tilte on the axis of the shaft 9 b the worm and segment mechanism connecte to the sleeve 30 this sleeve and also 'the collars 11 may be adjusted to desired turned positions on the shaft 9 by their clampin screws';-the scraper blade is yieldingly ba anced against rearward and forward turning movement on its pivotal mounting. 14 by the springs 15 and 16.

The invention being intended to be pointed out in the claims, is not to be limited to or by details of construction of the particular embodiment thereof illustrated by the drawings or hereinbefore described.

1. In combination with .a vehicle having a frame, a road 'scraper comprising: an arm swingably mounted on a vertical axis adjacent one side of the frame; a scraper blade carried adjacent the opposite side vof the frame and by the free end of the arm and being otherw1se unconnected to the frame and freely movable relatively thereto.

2. In combination with a vehicle having a frame, a road scraper comprising: an arm swingably mounted on a vertical axis adjacent one side of the frame; a scraper blade carried adjacent the opposite side of the frame andby the free end of the arm and being otherwise unconnected to the frame and freely movable relatively thereto; means for holding the arm in-'swung positions.

3. In combination with a. vehicle having a frame, a road scraper comprising: bearing blocks swingably mounted on vertical axes adjacent the opposite sides respectively of the frame; a scraper blade carried turnably on vertical axes by the free ends of said blocks and being otherwise unconnected to the frame and freely movable relatively thereto.

4. In combination with a vehicle havinga frame provided with a vertical bearing adjacent one side, a road scraper comprising: an arm swingably mounted on a vertical axis adjacent the opposite side of the frame and having a vertical bearing; a scraper blade having spindles turnable in said bearings and being 'otherwise unconnected to the frame and freely movable relatively thereto.

5. In combination with a vehicle having a frame, a road scraper comprising: an arm swingably mounted on a vertical axis adjacent one side of the frame; a scraper blade carried at one of its ends adjacent the opposits side of the frame and atits other end y the free end of the arm and being otherwise' unconnected to the frame and .freely movable relatively thereto and being slidably carried at one of its ends.

In testimony whereof I have hereunto set my hand at Grand Rapids, Michigan, this 31st day of August, 1926.

EDWARD J. JAoKoBoIc'E. 

